Penetration Tester, Citi

Penetration Tester

Citi

Location:
Singapore, Singapore

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Not provided

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Job Description:

If you are passionate and curious about security and want to use your offensive security skills to help keep our firm’s application and infrastructure safe, we want to speak with you. As an individual contributor on our penetration testing team, you will prepare and execute penetration testing assignments, work closely with engineering teams for vulnerability remediation, and identify security weaknesses in various platforms.

Job Responsibility:

Preparing and executing penetration testing assignments on our infrastructure assets and applications
working closely with the engineering teams to provide expert guidance and advice on the remediation of identified vulnerabilities
verifying newly discovered vulnerabilities in the environment
reporting security vulnerabilities to businesses, clearly articulating security issues to technical and non-technical stakeholders
performing manual penetration testing on infrastructure related systems and devices.

Requirements:

Bachelor’s degree with minimally 3 years of relevant experience
good understanding of industry frameworks and methodologies such as OWASP, OSSTMM, PTES, MITRE ATT&CK, threat modeling, etc.
certified or intend to be certified in security certifications such as OSCP, OSWE, GXPN, GCPN, CISSP, etc.
ability to identify vulnerabilities and zero-day exploits
familiarity with vulnerability assessment tools such as Nessus, Qualys, Kali Linux, AppScan, Burp Suite, etc.
familiarity with scripting languages such as Python
good knowledge of TCP/IP, IDS/IPS, firewalls, AAA systems, SSH, PKI
good knowledge of OS security - Unix, Linux, Windows, Android/IOS
good knowledge of common protocols - LDAP, SMTP, DNS, routing etc.
good knowledge of web application infrastructure - application servers, web servers, databases, cloud services, containers technologies etc.

Additional Information:

Job Posted:
August 15, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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